Device and method for dynamically adjusting frequency of central processing unit

A central processing unit and dynamic adjustment technology, applied in the field of frequency devices, can solve problems such as increased power consumption, and achieve the effect of reducing power consumption

Inactive Publication Date: 2013-08-14
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, as the computer system becomes more complex, its power consumption tends to increase further, so it is still necessary to continue to study devices and methods for reducing power consumption by dynamically adjusting the CPU frequency.

Method used

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  • Device and method for dynamically adjusting frequency of central processing unit
  • Device and method for dynamically adjusting frequency of central processing unit
  • Device and method for dynamically adjusting frequency of central processing unit

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Embodiment Construction

[0028] In the following, the apparatus and method for dynamically adjusting the frequency of the CPU according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0029] In current computer systems, there are mainly two types of application programs, namely CPU-intensive application programs (CPU bound) and memory-intensive (Memory bound) application programs. CPU-intensive applications use the CPU most of the time, while memory-intensive applications require frequent access to storage, usually the computer's memory. Correspondingly, the CPU instructions for executing the above programs can also be divided into "access memory instructions" and other instructions, such as "calculation instructions (addition and subtraction, etc.)". Moreover, since in a computer system, the frequency of the memory is generally much lower than the frequency of the CPU, therefore, when an instruction for accessing the memory (herei...

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Abstract

The invention provides a device and a method for dynamically adjusting the frequency of a central processing unit. The device is used on a computer system which executes a computer processing unit (CPU) intensive application program and a storage intensive application program. The device comprises a proportion obtaining unit, a frequency calculating unit and a frequency adjusting unit, wherein the proportion obtaining unit is used for obtaining the proportion of an instruction of an access storage in executing an application program task set; the frequency calculating unit is connected with the proportion obtaining unit and used for calculating adjusted new CPU frequency in an inverse proportional mode on the basis of the proportion of the instructions of the access storage obtained by the proportion access unit; and the frequency adjusting unit is connected with the frequency calculating unit and used for adjusting the CPU frequency into the new CPU frequency. According to the device and the method for dynamically adjusting the frequency of the central processing unit, the frequency of the CUP can be turned down by considering the proportion of access and storage instructions, and accordingly power consumption of the computer system can be reduced.

Description

technical field [0001] The present invention relates to the field of computer systems, and more particularly to a device and method for dynamically adjusting the frequency of a central processing unit and a computer system. Background technique [0002] In the current computer system, a target value of the utilization rate of the CPU (Central Processing Unit) is usually set, so as to keep the utilization rate of the CPU as high as possible. Generally speaking, there are two options for completing the same task in a computer system: one is to run at a higher CPU load rate (utilization) at a lower CPU frequency; the second is to run at a higher CPU frequency , with a lower CPU load (utilization) to run. Since in current computer systems, the power consumption of the CPU is mainly related to its frequency, that is, proportional to the square of its frequency, the lower the frequency of the CPU, the lower the power consumption. [0003] In recent years, mainstream processors, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
CPCG06F1/324G06F1/3225G06F1/32Y02D10/00
Inventor 陈虎
Owner SONY CORP
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